<template>
  <div>

    <el-row type="flex" justify="end">
      <el-select
        v-model="currentYear"
        size="small"
        style="width: 120px"
        @change="dateChange"
      >
        <el-option
          v-for="item in yearList"
          :key="item"
          :label="item + '年'"
          :value="item"
        />
      </el-select>
      <el-select
        v-model="currentMonth"
        size="small"
        style="width: 120px; margin-left: 10px"
        @change="dateChange"
      >
        <el-option v-for="item in 12" :key="item" :label="item + '月'" :value="item" />
      </el-select>
    </el-row>
    <el-calendar v-model="currentDate">
      <template #dateCell="{date,data}" class="content">
        <div class="date-content">
          <span class="text"> {{ data.day | getDay }}</span>
          <span v-if="isWeek(date)" class="rest">休</span>
        </div>
      </template>
    </el-calendar>
  </div>
</template>

<script>
export default {
  filters: {
    getDay(date) {
      const dateStr = date.split('-')[2]
      // startsWith 校验字符串是否以给定的字符开始
      return dateStr.startsWith('0') ? dateStr.substr(1) : dateStr
    }
  },
  data() {
    const now = new Date()
    const month = now.getMonth() + 1
    const year = now.getFullYear()
    return {
      currentMonth: month, // 当前月份
      currentYear: year, // 当前年份
      currentDate: now,
      // 1. 生成11位数组
      // 2. 每一位数组都是按年份渐进+1
      // 3. 年份应该从当前年 - 5 开始
      yearList: []
    }
  },
  //   created 是数据渲染完毕，但是dom还没挂载（页面还没显示）
  created() {
    this.getYearList()
  },
  methods: {
    dateChange() {
    //   console.log(this.currentYear)
    //   console.log(this.currentMonth)
      const newDate = this.currentYear + '-' + this.currentMonth
      //   console.log(newDate)
      this.currentDate = new Date(newDate)
    },
    getYearList() {
      for (let index = 0; index < 11; index++) {
        this.yearList.push(this.currentYear - 5 + index)
      }
    },
    isWeek(date) {
    //   console.log(date.getDay())
      return date.getDay() === 6 || date.getDay() === 0
    }
  }
}
</script>

<style  scoped>
::v-deep .el-calendar-day {
  height: auto;
}
::v-deep .el-calendar-table__row td,
::v-deep .el-calendar-table tr td:first-child,
::v-deep .el-calendar-table__row td.prev {
  border: none;
}
.date-content {
  height: 40px;
  text-align: center;
  line-height: 40px;
  font-size: 14px;
}
.date-content .rest {
  color: #fff;
  border-radius: 50%;
  background: rgb(250, 124, 77);
  width: 20px;
  height: 20px;
  line-height: 20px;
  display: inline-block;
  font-size: 12px;
  margin-left: 10px;
}
.date-content .text {
  width: 20px;
  height: 20px;
  line-height: 20px;
  display: inline-block;
}
::v-deep .el-calendar-table td.is-selected .text {
  background: #409eff;
  color: #fff;
  border-radius: 50%;
}
::v-deep .el-calendar__header {
  display: none;
}
</style>
